Received my modular Biomax 900 (4 units) with vertical stand. The install was rather simply EXCEPT for one thing. If you are installing 4 units on the upright stand (in a 2 by 2 configuration) you MUST program all the units before connecting them with the horizontal brackets as the two units on left (while facing the units) will not provide you with access to the panels. This was not made clear in the instructions and it should have been. Big oversight. Other than that, the units appear to be working properly and are very sturdy. I will continue to play with the adjustments over time and the wavelengths.

Love these. Superb quality

Nice quality!